|Author's Email Address
||This thesis had been viewed 5342 times. Download 232 times.|
|Type of Document
||A Novel Dual Band Antenna for Wearable Repeaters|
|Date of Defense
high impedance surface
inverted F antenna
||Many diseases need long-term monitoring blood concentration and glucose concentration to ensure human health. A new concept combines RFID system with repeater to monitor human health.|
A RFID tag is implanted in a human body to collect physiological data. A reader is placed at the indoor environment to read data from the tag. Implanted devices must obey the SAR standard to ensure human health. Human body is a lossy conductor and the body will reduce tag’s antenna efficiency and gain. When the physiological data transmits from human body to reader directly, it suffers limited distance between tag and reader. To enlarge the effective distance between tag and reader, a wearable repeater is added to collect physiological data and amplifies the physiological data.
Antennas on the repeater operate in dual bands. The lower band radiator radiates toward the body to collect signal from the tag. The upper band radiator radiates toward the reader instead.
This thesis proposes a new design concept. This concept allows the control of the radiation patterns in the two bands separately. The ISM band peak gain of the antenna proposed in this thesis is higher than those in all reference and the antenna achieves low profile.
keywords: high impedance surface, inverted F antenna, spiral antenna, filter, wearable antenna, coplanar waveguide, RFID system
||Chih-Wen Kuo - chair|
Ming-Lung Kung - co-chair
Fu-Kang Wang - co-chair
Ken-Huang Lin - advisor
indicate access worldwide|
|Date of Submission